-
公开(公告)号：US20240351964A1
公开(公告)日：2024-10-24
申请号：US18685628
申请日：2022-09-12
摘要： A process for producing isopentane and isoamylene can comprise passing a feed stream comprising C5 hydrocarbons through a hydrodesulfurization assembly to produce a first stream: passing the first stream to a first separation assembly to produce a second stream and a first separated stream: passing the second stream to a deisopentanizer assembly to produce a second separated stream comprising isopentane, a third separated stream comprising C6+ hydrocarbons, and a raffinate stream comprising C5 hydrocarbons; and passing the raffinate stream to a reactor assembly to produce a reaction product stream comprising isoamylene. The present disclosure also provides for a system for producing isopentane and isoamylene.
-
公开(公告)号：US20240217893A1
公开(公告)日：2024-07-04
申请号：US18556902
申请日：2022-03-23
申请人： CHIYODA CORPORATION
发明人： Osamu Hirohata , Tadashi Ito , Taichiro Masagaki , Yuria Watanabe
摘要： The method is for producing para-xylene using, as a main raw material, a mixed gas of carbon dioxide or carbon monoxide or both thereof and hydrogen. The method including: a reaction step of bringing a raw material mixed gas including the mixed gas into contact with a reaction catalyst under high temperature and high pressure to cause a reaction, to thereby obtain a product gas mixture containing para-xylene; a separation step of cooling the product gas mixture obtained in the reaction step to condense a high boiling point component, to thereby separate the product gas mixture into a water phase containing a water-soluble component, an oil phase containing a xylene mixture, and a gas phase containing an unreacted gas; and a circulation step of mixing at least part of the gas phase having been separated in the separation step into the raw material mixed gas.
-
3.发明公开公开(公告)号：US20240150259A1
公开(公告)日：2024-05-09
申请号：US18387651
申请日：2023-11-07
发明人： Stephane HAAG , Martin GORNY , Bryce WILLIAMS , Thomas RENNER
摘要： The invention relates to a process for producing olefins from oxygenates with variable production of ethylene and propylene. According to the invention, the process is switched from a state 1 with lower ethylene production to a state 2 with higher ethylene production in that:
the fraction C2re of the ethylene product stream which is recycled to the OTO reactor is lowered from a first value C2re,1 to a second value C2re,2, resulting in a change dC2re=C2re,1−C2re,2,
the fraction C4+re of the C4+ product stream containing C4+ olefins which is recycled to the OTO reactor is lowered from a first value C4+re,1 to a second value C4+re,2, resulting in a change dC4+re=C4+re,2−C4+re,1,
where the changes dC2re and dC4+re in a mass flow ratio dC4+re/dC2re, where the mass flow ratio is between 70% and 130%.-
公开(公告)号：US20240132919A1
公开(公告)日：2024-04-25
申请号：US18547466
申请日：2022-02-25
摘要： Exemplary methods of producing methane in a reservoir may include accessing a consortium of microorganisms in a geologic formation. The methods may include delivering an aqueous solution including waste product to the consortium of microorganisms. The methods may include increasing production of gaseous materials by the consortium of microorganisms The methods may include recovering gaseous products from the reservoir. The gaseous products may by characterized by an enriched methane concentration.
-
公开(公告)号：US11925880B2
公开(公告)日：2024-03-12
申请号：US16133339
申请日：2018-09-17
发明人： Larry Baxter , Chris Hoeger , Stephanie Burt , Kyler Stitt , Aaron Sayre , Skyler Chamberlain
CPC分类号： B01D17/10 , B01D17/0214 , B01D21/009 , C07C7/00
摘要： A method for separating liquids is disclosed. A feed stream is passed into a separator. The feed stream comprising an organic compound, carbon dioxide, and oxides selected from the group consisting of sulfur oxides, nitrogen oxides, ozone and combinations thereof. A portion an organic-rich stream is separated from a portion of an inorganic-rich stream through separation by gravity. The organic-rich stream contains a portion of the organic compound and a first portion of the carbon dioxide. The inorganic-rich stream contains a portion of the oxides and a second portion of the carbon dioxide.
-
公开(公告)号：US11919852B2
公开(公告)日：2024-03-05
申请号：US17044814
申请日：2019-04-05
申请人： LINDE GmbH
发明人： Duc Tuat Pham , Benedikt Kurz
CPC分类号： C07C7/005 , B01D3/146 , B01D5/0036 , B01D5/0063 , B01D5/0075 , B01D5/009 , B01D53/002 , C07C7/09 , C07C7/11 , C10G70/043
摘要： The invention relates to a process for separating a component mixture (K) comprising hydrogen, methane, hydrocarbons having two carbon atoms and hydrocarbons having three or more carbon atoms, wherein in a deethanization at least a portion of the component mixture (K) is subjected to a first partial condensation by cooling from a first temperature level to a second temperature level at a first pressure level to obtain a first gas fraction (G1) and a first liquid fraction (C1), at least a portion of the first gas fraction (G1) is subjected to a second partial condensation by cooling from the second temperature level to a third temperature level at the first pressure level to obtain a second gas fraction (G4) and a second liquid fraction (C2), and at least a portion of the first liquid fraction (C1) and at least a portion of the second liquid fraction (C2) are subjected to a rectification to obtain a third gas fraction (G3) and a third liquid fraction (C3+). The first liquid fraction (C1) or its part subjected to the rectification and the second liquid fraction (C2) or its part subjected to the rectification are expanded to a second pressure level and the rectification is carried out at the second pressure level, the first pressure level being 25 to 35 bar and the second pressure level being 14 to 17 bar. An overhead gas formed during the rectification is cooled to −25 to −35° C. and partially condensed, wherein a condensed portion of the overhead gas is used partially or completely as a reflux in the rectification and an uncondensed portion of the overhead gas is provided partially or completely as the third gas fraction (G3). The present invention likewise provides a corresponding plant (100, 200).
-
公开(公告)号：US20240067588A1
公开(公告)日：2024-02-29
申请号：US18259962
申请日：2021-12-20
发明人： Shahid Azam , Abdulmajeed Mohammed Al-Hamdan , Mohammed Fahad Al-Anazi , Bander Bawareth , Ashim Kumar Ghosh , Debashis Chakraborty , Somak Paul , Rajan V. Deshmukh , Ahmed Hussain Eissa , Omar A. Marghalani , Sebastiano Licciulli
CPC分类号： C07C5/222 , C07C7/005 , C07C2529/40
摘要： A method for purifying 1-hexene is disclosed. The method can include contacting a first stream containing 1-hexene and 2-ethyl-1-butene with an isomerization catalyst containing an comprising an alumina, silica-alumina, a zeolite, or an ion exchange resin, or any combinations thereof, under conditions sufficient to selectively isomerize at least a portion of 2-ethyl-1-butene into 3-methyl-2-pentene and form a second stream containing 1-hexene and 3-methyl-2-pentene, and separating the second stream into a third stream containing 1-hexene and a fourth stream containing 3-methyl-2-pentene.
-
公开(公告)号：US11851518B2
公开(公告)日：2023-12-26
申请号：US16973075
申请日：2019-06-12
发明人： Mark W. Blood , Brent J. Sherman
摘要： The present disclosure provides for a separations system for separating ethylene, 2-methylbutane and at least one unsubstituted (C6-C12) hydrocarbon in a multi-component condensate mixture. The separations system includes a feed conduit in fluid communication with a source of the multi-component condensate mixture, a stripper column in fluid communication with the feed conduit, where the stripper column separates the multi-component condensate mixture into a heavies component mixture with at least one unsubstituted (C6-C12) hydrocarbon, and a top mixture having a medium component (s) that include at least the 2-methylbutane and a light component (s) that include at least the ethylene. The separations system further includes a flash drum that separates the top mixture into the medium component (s) and the light component (s). The separations system does not include a distillation column disposed between the source of the multi-component condensate mixture and the flash drum.
-
公开(公告)号：US11780789B2
公开(公告)日：2023-10-10
申请号：US17786813
申请日：2020-11-05
摘要： Systems and methods for separating a mixture comprising C4 hydrocarbons and a solvent have been disclosed. The mixture is produced as a bottom stream of a rectifier column. The mixture is processed in at least two heating and flash-evaporating cycles to remove at least some C4 hydrocarbons as vapor streams. The resulted liquid stream is further degassed in a degasser column to produce a recycle vapor stream and a lean solvent stream.
-
公开(公告)号：US11731922B2
公开(公告)日：2023-08-22
申请号：US16964665
申请日：2019-01-30
发明人： Longsheng Tian , Ming Zhao , Wencheng Tang , Siliang Gao , Nan Yang , Zhifeng Bian , Siyuan Qie
CPC分类号： C07C7/08 , B01D3/10 , B01D3/143 , B01D3/40 , B01D11/0492 , C07C7/005 , B01D2011/002
摘要： A method for separating aromatic hydrocarbons by an extractive distillation, comprising introducing a hydrocarbon mixture containing aromatic hydrocarbons into the middle of an extractive distillation column (8); introducing an extraction solvent into the upper part of the extractive distillation column; after an extractive distillation, a raffinate containing benzene is discharged from the top of the column, wherein the benzene content is 3-40% by mass, and sent to the lower part of the extraction column (10); the extraction solvent is introduced to the upper part of the extraction column for a liquid-liquid extraction; a raffinate liquid free of aromatic hydrocarbons is discharged from the top of the extraction column; a rich solvent containing benzene is discharged from the bottom of the column and enters the upper-middle part of the extractive distillation column; the rich solvent obtained at the bottom of the extractive distillation column is sent to the solvent recovery column to separate the aromatic hydrocarbons and the solvent. By combining an extractive distillation with a liquid-liquid extraction ingeniously, the method can achieve the separation of aromatic hydrocarbons with a high purity and a high recovery rate, and a significant decrease of the energy consumption in the extraction and separation process.
-
-
-
-
-
-
-
-
-
搜索结果
2171 条记录 (耗时 0.026 秒)
